I have a wall of flannel, small wall, and started arranging pieces and kind of have it figured out. Not sure if to start at bottom side or top. They definitely go at a diagonal. I am going to put it all on flannel and then start sewing the squares together. Takes 4 squares to make a complete block with pinwheel. Looks like a half pinwheel in the corner and across top and sides so that is confusing to me but the flannel wall is a miracle worker for this quilt.
Evelyn